Habitat

Feeding and Diet

The Eleven-armed Sea Star feeds on small crabs or marine worms.

Other behaviours and adaptations

Using a hand lens, you can see small protuberances like miniature jaws around the spines on the body of the Eleven-armed Sea Star. These are called pedicellariae, and they not only defend the sea star from predators, but also move up and down to catch food, which usually consists of small crabs or worms. These tiny jaws hang on until the prey is dead or until it can be reached by an arm or tube feet and passed to the mouth.